[r11] arter97 kernel for Poco F1

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May 27, 2018
19
1
I hav 2 major things to ask

1-how to import Facebook birthdays to calendar? (coz miui doesn't support tht)

2-Im using poco f1 in a Custom miui based on 9.0(Miroom)

how can i install screen time or Focus mode in it ? plss guyz help me out ?
 

vaibhavnegi

Senior Member
Feb 13, 2014
398
196
With the device or without it, this kernel is the most stable out of all ,tried all of them even Raphael's distrubt , true they all are full of features and also full of bugs and sudden reboots and freezes , if you are gamer then maybe they perform better but someone who needs stable phone for work then this build has never failed for me, please do keep your kernel going however you wish, I don't Want to advice or anything but it's also not good to fall for the trap of these naysayers, you still have a lot of users who enjoy your builds , no need to leave cause of couple of douchebags.
Its overrated

---------- Post added at 08:58 PM ---------- Previous post was at 08:42 PM ----------

A few weeks ago went to telegram and saw a post linking to the donation amount for arter to buy the pocophone and there were already ~ 200 usd being donated. I find hard to belive that he couldn't get the 300-350$ needed to buy the poco. Even so, I can't understand why most of the devs get so offended by the community. It's the snowflake generation or what ? Devs claim they do this work for free out of the goodness of their hearts but is not like that, most of them want the fame, they want to be praised and glorified even if they don't realize this. If I were a dev i would just look through the posts to get user feedback and logs and simply just IGNORE the ****ty unrelated comments. As simple as that. So why all the drama ? Just do what you do, leave a donation link for us to repay your work, move on and stop complaining on tweeter of how your feelings got hurt.
He wants attention. An attention seeker to be precise. If he hates developing just let it go!
 
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guhvanoh

Senior Member
I hav 2 major things to ask

1-how to import Facebook birthdays to calendar? (coz miui doesn't support tht)

2-Im using poco f1 in a Custom miui based on 9.0(Miroom)

how can i install screen time or Focus mode in it ? plss guyz help me out ?
This has nothing to do with arter97 kernel. Please get this post deleted or moved to the Q & A section.

Sent from my Galaxy Tab S5e using XDA Labs
 

hgw12

Member
Dec 28, 2017
9
1
I got MIUI 11 and Optimus Drunk Kernel, i want to try Arter kernel, do i need to reinstall MIUI 11 or just install Arter Kernel instead?
 
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Chaitanya8300

Member
Feb 8, 2017
23
0
I can't flash arter97 kernel on PE Android 10 12/12 build(latest)...I got updater 1 error....Is there any problem with after 97 kernel for PE...
I'm providing logs...So please help me with that..
 

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Stonecaper

Senior Member
May 16, 2012
165
26
Flashed the kernel last night. Facing ridiculous battery drain since then. My phone is awake like crazy. I must be doing something wrong. what is it?
 

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Jul 20, 2018
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Chennai
Xiaomi Poco F1
How do I install F2FS? (iamn00b)

arter97.png

arter97 kernel for Poco F1​

/* Details */

Latest CAF msm-4.9 kernel fully merged
This kernel contains more cutting-edge changes from Qualcomm than the regular sdm845 tag
Latest Linux 4.9 subversion merged
Use CONFIG_HZ = 300
- This changes context switching interval from 10ms to 3.33ms
- Pixel used this for years and Google recommends other vendors to do the same for fewer jitters
Memory management improved(from Pixel 2 & 3)
Pixel's lowmemorykiller used
Scheduler commits cherry-picked from Pixel 3
Timer optimizations
RTL8152/8153 USB LAN adapter support
Permissive SELinux
Passes SafetyNet
Built with -O3 speed optimizations
Built with latest GCC
Westwood as default TCP network congestion control
UFS optimizations
Entropy hook on storage removed
Latest mainline f2fs support with GC fixes
CFQ I/O scheduler backported from mainline
Systemless installation (the kernel itself doesn't touch /system or /vendor)
Modules support disabled for lighter kernel
WireGuard support
Removed RTB(interrupt) logging entirely

/* Development */

I do not own a Poco F1.

This was developed by sharing most of the bits from my OnePlus 6 and Razer Phone 2 kernel.
I won't be doing device-specific changes to this kernel(e.g. improvements to the touch panel drivers) until I get my hands on an actual device.
This also means this kernel is/will be developed conservatively.

If you're interested in contributing to a fundraiser for me to get a Poco F1, please check post #2.

/* f2fs */

This kernel fully supports f2fs for /data and I encourage everyone to use f2fs with my kernel for better performance.
See here as to why you might want f2fs.

To use f2fs, download zip files from http://arter97.com/browse/f2fs

Flash f2fs_tools_for_twrp.zip from TWRP. This won’t format your /data partition.
This will replace TWRP's f2fs tools with the latest version and pass the correct parameter to mkfs.f2fs, which is necessary.
This needs to be done everytime you enter TWRP, if you want to re-format to f2fs.

After formatting, or flashing a new ROM or an OTA, /vendor’s fstab needs to be changed.
Flash f2fs_fstab.zip to convert fstab to f2fs again. This won’t format your /data partition.

/* Disclaimer */

Your warranty is now void.
I am not responsible for bricked devices, dead SD cards,
thermonuclear war, or you getting fired because the alarm app failed. Please
do some research if you have any concerns about features included in this kernel
before flashing it! YOU are choosing to make these modifications, and if
you point the finger at me for messing up your device, I will laugh at you. Hard. A lot.

/* Thanks to */

TheCrazyLex
xboxfanj
Tim Murray
RenderZenith
nathanchance - for android-linux-stable

/* Instructions */

You can use the zip file to flash the kernel from your existing TWRP recovery.
If you don't have TWRP installed already, you can use the img file to flash the kernel directly from your PC via fastboot.

Both methods will install both kernel and modified TWRP recovery.
You can check if the modified TWRP is installed by looking at TWRP's version name.
It should say "arter97".

/* Downloads and links */

arter97.com
Kernel source

XDA:DevDB Information
arter97 kernel for Poco F1, Kernel for the Xiaomi Poco F1

Contributors
arter97
Kernel Special Features:

Version Information
Status: Testing

Created 2019-04-07
Last Updated 2019-10-28

Hey, I've been wanting to install F2FS to see the performance difference between ext4 and f2fs. But I'm worried if I will lose my data. Should I take a backup first or will converting to f2fs not result in data loss? And can anyone please give me an Installation guide? I dont want to mess this up.
Love your kernel. Thank you!
 

sachin5555

Senior Member
Nov 15, 2015
419
77
28
Shimla
This is not based in fact and an insulting guess.

arter97 may or may not update the kernel, but he hasn't said either way. Granted, his update schedule isn't as frequent as other developers, but he's already done 11 revisions and is supporting both PIE and Android 10 Q.
deleted.

---------- Post added at 07:06 AM ---------- Previous post was at 07:03 AM ----------

Hey, I've been wanting to install F2FS to see the performance difference between ext4 and f2fs. But I'm worried if I will lose my data. Should I take a backup first or will converting to f2fs not result in data loss? And can anyone please give me an Installation guide? I dont want to mess this up.
Love your kernel. Thank you!
If u change your system from ext4 to f2fs you need to format your all data including internal storage so please keep backup before proceed.
 
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jackiass

Senior Member
May 22, 2011
903
606
OnePlus 3
Xiaomi Poco F1
Hey, I've been wanting to install F2FS to see the performance difference between ext4 and f2fs. But I'm worried if I will lose my data. Should I take a backup first or will converting to f2fs not result in data loss? And can anyone please give me an Installation guide? I dont want to mess this up.
Love your kernel. Thank you!
If you don't know what formatting means I think you should wait until you have a bit more experience. If you choose not to wait use search. All the steps have been explained multiple times already. You will lose all data so backup to your sdcard first.
 
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    arter97.png

    arter97 kernel for Poco F1​

    /* Details */

    Latest CAF msm-4.9 kernel fully merged
    This kernel contains more cutting-edge changes from Qualcomm than the regular sdm845 tag
    Latest Linux 4.9 subversion merged
    Use CONFIG_HZ = 300
    - This changes context switching interval from 10ms to 3.33ms
    - Pixel used this for years and Google recommends other vendors to do the same for fewer jitters
    Memory management improved(from Pixel 2 & 3)
    Pixel's lowmemorykiller used
    Scheduler commits cherry-picked from Pixel 3
    Timer optimizations
    RTL8152/8153 USB LAN adapter support
    Permissive SELinux
    Passes SafetyNet
    Built with -O3 speed optimizations
    Built with latest GCC
    Westwood as default TCP network congestion control
    UFS optimizations
    Entropy hook on storage removed
    Latest mainline f2fs support with GC fixes
    CFQ I/O scheduler backported from mainline
    Systemless installation (the kernel itself doesn't touch /system or /vendor)
    Modules support disabled for lighter kernel
    WireGuard support
    Removed RTB(interrupt) logging entirely

    /* Development */

    I do not own a Poco F1.

    This was developed by sharing most of the bits from my OnePlus 6 and Razer Phone 2 kernel.
    I won't be doing device-specific changes to this kernel(e.g. improvements to the touch panel drivers) until I get my hands on an actual device.
    This also means this kernel is/will be developed conservatively.

    If you're interested in contributing to a fundraiser for me to get a Poco F1, please check post #2.

    /* f2fs */

    This kernel fully supports f2fs for /data and I encourage everyone to use f2fs with my kernel for better performance.
    See here as to why you might want f2fs.

    To use f2fs, download zip files from http://arter97.com/browse/f2fs

    Flash f2fs_tools_for_twrp.zip from TWRP. This won’t format your /data partition.
    This will replace TWRP's f2fs tools with the latest version and pass the correct parameter to mkfs.f2fs, which is necessary.
    This needs to be done everytime you enter TWRP, if you want to re-format to f2fs.

    After formatting, or flashing a new ROM or an OTA, /vendor’s fstab needs to be changed.
    Flash f2fs_fstab.zip to convert fstab to f2fs again. This won’t format your /data partition.

    /* Disclaimer */

    Your warranty is now void.
    I am not responsible for bricked devices, dead SD cards,
    thermonuclear war, or you getting fired because the alarm app failed. Please
    do some research if you have any concerns about features included in this kernel
    before flashing it! YOU are choosing to make these modifications, and if
    you point the finger at me for messing up your device, I will laugh at you. Hard. A lot.

    /* Thanks to */

    TheCrazyLex
    xboxfanj
    Tim Murray
    RenderZenith
    nathanchance - for android-linux-stable

    /* Instructions */

    You can use the zip file to flash the kernel from your existing TWRP recovery.
    If you don't have TWRP installed already, you can use the img file to flash the kernel directly from your PC via fastboot.

    Both methods will install both kernel and modified TWRP recovery.
    You can check if the modified TWRP is installed by looking at TWRP's version name.
    It should say "arter97".

    /* Downloads and links */

    Removed
    Kernel source

    XDA:DevDB Information
    arter97 kernel for Poco F1, Kernel for the Xiaomi Poco F1

    Contributors
    arter97
    Kernel Special Features:

    Version Information
    Status: Testing

    Created 2019-04-07
    Last Updated 2020-01-26
    79
    There are soooo many misinformation regarding f2fs, but I don’t blame you. f2fs documentation sucks and there’s not much details on the internet except for its original paper.

    Here’s a discussion that went on a Telegram group. I’m sharing it here to correct some misconceptions regarding f2fs.

    F2FS is faster than ext4
    One of the reasons is the cache files that it generates
    Later these files remain as garbage Becoz no use
    No, those “invalid segments” generated from f2fs is not used as a cache in its lifetime. It’s a thing on LFS(Log-structured File System). LFS gives a lot of advantages to flash storage but the growth of invalid blocks is the biggest downside of LFS design. f2fs aimed to effectively solve this via GC.

    Soon they increase to a huge size
    And may corrupt your data
    It NEVER results in data corruption, it just causes a hit on write performance after free segments are gone. Then, GC must be triggered on every write requests.

    Kernels can enable background Gc flag
    Which may lead to a little slow performance
    I’m not sure I’d use “little slow performance” here, it’s quite the contrary. f2fs’ background GC detects idle time to run GC, which is by default set very conservatively to avoid any performance degradation when I/O request spikes while GC is running.
    My rapid GC disables background GC because it’s enough to clean-up invalid segments.

    F2FS itself just replacing EXT4, in fstab for example, isn't actually that much faster. Many many backend are up on the web to prove it.
    Traditional Linux I/O benchmarks don’t represent daily Android I/O workloads. Android I/O workloads are VERY different from traditional desktop/laptop’s workloads.

    The ability to turn off journaling safely in SQLite is so far the biggest advantage f2fs has over ext4. Check the piece I wrote on AnandTech for more details: https://www.anandtech.com/show/13474/the-google-pixel-3-review/2

    SSR also allows f2fs to reduce performance regression when the utilization is nearly full. This is indeed, very noticeable. If you compare side-by-side f2fs with ext4 both with more than 80% full, f2fs remains more responsive.

    However, when you use it configured a bit with nobarrier, etc. it can show a decent improvement (still not massive otherwise everyone would be using it).
    Not sure how much of an improvement you would start call “massive”. The LFS nature of f2fs allows fsync() to bypass barrier without sacrificing integrity, which uplifts the bottleneck in write performance. In practice, this gives about 5-6x improvements in write performance.

    Google enforces f2fs on Android Go devices. I think it’s a pretty good indication of “everyone is starting to use it”.

    Finally, it is no where near as stable as EXT4. It may have stabilised across the years but does not compare.
    I’m not gonna sugarcoat it. You’re correct.
    f2fs used to run into funky issues when a corner-case workload’s been thrown at it(which I’m yet to see in the recent year).

    But I’m genuinely curious why the heck people are saying f2fs is unstable for regular Android users to use it. I would LOVE to see some real data and fact behind someone saying f2fs is unstable.

    You won’t run into corner-case when you’re running Android. If any, it should be better than ext4 to its LFS nature.

    You heard of Btrfs before? Well it's considered still pretty unstable and corrupts data.
    btrfs aims to throw you every functions a file-system could possibly offer, which is why people say it’s unstable. btrfs/zfs is not comparable to f2fs.

    IIRC EXT4 has flags to lower wear and tear too and it's basically meaningless on UFS nowadays.
    Totally incorrect. Journalling itself gives ext4 a disadvantage about 30% over f2fs and its GC shenanigans. This is the main reason why f2fs is enforced on Android Go devices.
    Well if you’re gonna compare f2fs to ext4 without journalling, you don’t deserve to know these details.

    I'm saying just because you or even if this entire group didn't have issues with F2FS, that's not gonna give it the title of stable. Just look at Google's PXL3 implementation.
    What’s wrong with Pixel 3’s f2fs? I’m yet to see an issue caused from f2fs instability.

    F2FS is still missing things such as ICE support officially.
    Google used a proprietary implementation of ICE from CAF Partner tag
    Isn’t qcom’s implementation of ICE a mess anyways. This is not an issue of f2fs. f2fs just exposed multiple issues on qcom’s implementation of ICE.

    With other developers and my opinion I got to the conclusion that while F2FS is still unstable the only reason not to use is cause ICE F2FS isn't very ready yet.
    ICE on f2fs should be good if you have the latest CAF stuffs.
    52
    45
    r10 is up.
    I cooked up a separate Android 10 kernel since users seem to care.

    r10
    Novatek touch firmware updated to 10.3.7.0 (by Akhil)
    Separate Android 10 kernel released
    Swap compressor backend(LZ4) updated
    LA.UM.8.3.r1-06100-sdm845.0 merged
    Linux v4.9.196 merged
    Wi-Fi drivers updated to 5.1.1.74O
    Latest f2fs-stable merged
    43
    I'm discontinuing Poco F1 development on XDA.

    Follow @arter97 on Twitter for status updates.